diff --git a/assets/javascripts/discourse/mixins/undo-changes.js.es6 b/assets/javascripts/discourse/mixins/undo-changes.js.es6
index 43df47f4..776be1cd 100644
--- a/assets/javascripts/discourse/mixins/undo-changes.js.es6
+++ b/assets/javascripts/discourse/mixins/undo-changes.js.es6
@@ -3,14 +3,15 @@ import { default as wizardSchema } from '../lib/wizard-schema';
 import { set, get } from "@ember/object";
 import Mixin from "@ember/object/mixin";
 import { observes } from 'discourse-common/utils/decorators';
+import { deepEqual } from 'discourse-common/lib/object';
 
 export default Mixin.create({
   didInsertElement() {
     this._super(...arguments);
     this.setupObservers();
-    
+
     const obj = this.get(this.componentType);
-    
+
     this.setProperties({
       originalObject: JSON.parse(JSON.stringify(obj)),
       undoIcon: obj.isNew ? 'times' : 'undo',
@@ -22,11 +23,11 @@ export default Mixin.create({
     this._super(...arguments);
     this.removeObservers();
   },
-  
+
   removeObservers(objType=null) {
     const componentType = this.componentType;
     const obj = this.get(componentType);
-    
+
     let opts = {
       objectType: objType || obj.type
     }
@@ -35,44 +36,44 @@ export default Mixin.create({
       obj.removeObserver(property, this, this.toggleUndo);
     });
   },
-  
+
   setupObservers(objType=null) {
     const componentType = this.componentType;
     const obj = this.get(componentType);
-    
+
     let opts = {
       objectType: objType || obj.type
     }
-    
+
     listProperties(componentType, opts).forEach(property => {
       obj.addObserver(property, this, this.toggleUndo);
     });
   },
-  
+
   revertToOriginal(revertBasic=false) {
     const original = JSON.parse(JSON.stringify(this.originalObject));
     const componentType = this.componentType;
     const obj = this.get(componentType);
     const objSchema = wizardSchema[componentType];
     const basicDefaults = objSchema.basic;
-    
+
     if (revertBasic) {
       Object.keys(basicDefaults).forEach(property => {
         let value;
-        
+
         if (original.hasOwnProperty(property)) {
           value = get(original, property);
         } else if (basicDefaults.hasOwnProperty(property)) {
           value = get(basicDefaults, property);
         }
-        
+
         set(obj, property, value);
       });
     }
-    
+
     if (objSchema.types && obj.type) {
       let typeDefaults = objSchema.types[obj.type];
-      
+
       Object.keys(typeDefaults).forEach(property => {
         let value;
 
@@ -81,45 +82,45 @@ export default Mixin.create({
         } else if (typeDefaults.hasOwnProperty(property)) {
           value = get(typeDefaults, property);
         }
-              
+
         set(obj, property, value);
       });
     }
   },
-  
+
   toggleUndo() {
     const current = this.get(this.componentType);
     const original = this.originalObject;
-    this.set('showUndo', !_.isEqual(current, original));
+    this.set('showUndo', !deepEqual(current, original));
   },
-  
+
   actions: {
     undoChanges() {
       const componentType = this.componentType;
       const original = this.get('originalObject');
       const obj = this.get(componentType);
-      
+
       this.removeObservers(obj.type);
       this.revertToOriginal(true);
       this.set('showUndo', false);
       this.setupObservers(this.get(componentType).type);
     },
-    
+
     changeType(type) {
       const componentType = this.componentType;
       const original = this.get('originalObject');
       const obj = this.get(componentType);
-      
+
       this.removeObservers(obj.type);
       obj.set('type', type);
       this.revertToOriginal();
       this.set('showUndo', type !== original.type);
       this.setupObservers(type);
     },
-    
+
     mappedFieldUpdated(property, mappedComponent, type) {
       const obj = this.get(this.componentType);
-      obj.notifyPropertyChange(property); 
+      obj.notifyPropertyChange(property);
     }
   }
-})
\ No newline at end of file
+})
diff --git a/assets/javascripts/wizard/lib/user-search.js.es6 b/assets/javascripts/wizard/lib/user-search.js.es6
index 6b242fd4..617825d1 100644
--- a/assets/javascripts/wizard/lib/user-search.js.es6
+++ b/assets/javascripts/wizard/lib/user-search.js.es6
@@ -1,5 +1,6 @@
 import { CANCELLED_STATUS } from 'discourse/lib/autocomplete';
 import getUrl from 'discourse-common/lib/get-url';
+import discourseDebounce from "discourse/lib/debounce";
 
 var cache = {},
     cacheTopicId,
@@ -39,7 +40,7 @@ function performSearch(term, topicId, includeGroups, includeMentionableGroups, i
   });
 }
 
-var debouncedSearch = _.debounce(performSearch, 300);
+var debouncedSearch = discourseDebounce(performSearch, 300);
 
 function organizeResults(r, options) {
   if (r === CANCELLED_STATUS) { return r; }